Jet nozzle for fire hose



' (No Model.)

M. H. HART. JET NGZZLE FOR FIRE HOSE No. 600,149. Patented Mar. 8, 18 98.

$5: f i1 asses- W Fig UNITED STATES PATENT ()FFICE.

MILTON H. HART, OF NEW YORK, N. Y.

JET-NOZZLE FOR FIRE-HOSE.

SPECIFICATION forming part of. Letters Patent No. 600,149, dated March 8, 1898. Application filed February 14,1896. Serial No. 579,268. (No model.)

To all whom it may concern.-

Be it known that I, MILTON H. HART, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Jet-Nozzles for Fire-Hose, of which the following is a specification.

The subject of the present invention is a spray-nozzle for fire-hose; and the principal objects of the present improvements are to secure a comparatively expanded or diffused spray-jet when necessary and a concentrated jet of graduated character when desired. Provision is also made for guarding or protecting the end of the nozzle in which the discharge-orifices are located against blows or shocks that might be sustained in permitting the nozzle to drop or fall.

In the drawings accompanying this specification, Figure 1 is a side view of my improved nozzle, showing the sleeve as being adjusted to allow the jets their normal discharge. Fig. 2 is a longitudinal sectional view of the improved nozzle, the sleeve being represented as being adjusted to concentrate to some extent the force and direction of the issuing jets. Fig. 3 is an enlarged detailed sectional view of the head of the nozzle and showing more clearly the relative variation in the pitch of the jet-orifices. Fig. 4 is an inverted plan View. Fig; 5 is a diagram view of my improved spray-nozzle, illustrating the same in a position it may occupy when dropped and showing how the head is guarded or protected from becoming damaged; and Fig. 6 is a sectional detail view showing preferred features of construction.

Heretofore, in so far as I am advised, spraynozzles for fire-hose have been so constructed as to only deliver asingle spray effect, the force and not the degree of concentration of the jet being controlled by a valve seated in the stock of the nozzle. It is obvious that such an arrangement diminishes the spray effect by merely decreasing the volume and force of the discharged water, a result which in many situations will be highly undesirable. By my improved nozzle the water is not only thoroughly sprayed to cover a large area, but can be concentrated to any desired extent without variation in either the force or volume.

The nozzle proper comprises the externally- I threaded cylindrical body 1, closed at its forward end by the head 2, at the inner portion of which is located the flange 3, said head and flange being preferably cast with the body. The shape of the head is approximately concavo-convex, the head being internally provided with radial webs 4. These latter permit the location in said head of a series of annular orifices or slots 5 6 7, the inner of which is located at the intersection of the head and the flange, the second at an intermediate point, the third being the outermost of least diameter.

The several orifices or slots 5 6 7 extend in a complete circle around and through the metal of the head, so that the same is divided into a series of rings of varying dimension relatively held together by the internal webs. Such an arrangement secures practically a series of circular orifices or openings from each of which a spray-jet issues in a continuous flaring sheet of water.

With a View of causing the sprayed water to cover a comparatively wide area and hence be more effective in operation the inner orifice 5 extends through the head almost at a right angle with the axis of the nozzle, the forward obliqueness being only sufficient to permit the discharged jet to smoothly clear the metal of the flange. The second orifice 6 has a greater forward pitch, while the orifice 7 is almost parallel with the nozzle-axis. Of course the number and relative pitch of the spray-orifices may vary as found desirable.

When the sprayj ets are to be concentrated, a sleeve 8, having an inner contracted portion 9 in threaded engagement with the body 1, is revolved on said body through the medium of a milled edge 10, so as to feed and project its forward portion 11 beyond the flange 3 to the end that the water issuing from the orifice 5 will impinge against the inner face of said projection 11 and be forwardly deflected at a greater or less angle, according to the degree which said portion extends beyond the flange. By continuing the forward feed of the sleeve the water discharged through the orifice 6, in connection with that from the orifice 5,will also be deflected so as to increase the concentration and volume of the forwardlydeflected water. The inwardly-turned portion 9 also serves as a stop to limit the travel of the sleeve by coming in contact with the gasket 12, seated at the rear of the flange 3, when the sleeve has reached the determined limit of its forward movement and striking against the edge of a collar 13, screwed and bolted on the free end portion of the body 1. Obviously the collar admits of the attachment of the spray-nozzle with the nozzlestock. The inner smooth face of the sleeve works snugly against the edge of the gasket or packing 12, which, being preferably of leather, will swell and exclude water from leaking to the space at the rear of the flange.

The improved spray-nozzle described will be specially useful in connection with the compound hose-nozzles of the well-known Ball type, consisting, essentially, of a bifurcated stock containing a valve adapted to admit water to one of the branches equipped with a solid jet-nozzle, to the other branch having a spray-nozzle, or to cut off the supply to either.

As the usual dropping or falling of the improved spray-nozzle might tend to injure the comparatively weakened portion presented by the slotted head, the latter is externally provided with a central longitudinal lug or projection 11, the end of which is at such an angle with respect to the forward edge of the sleeve when flush with the flange 3 thata line drawn from one to the other will clear the surface of the head. Therefore either or both the lugand said sleeve edge must receive any shock or blow sustained when the nozzle is permitted to drop or fall, and the orifice portion is consequently protected.

In Fig. 6 I have shown in part a preferred form of nozzle, wherein the head 2 is made cylindrical in form to present the top or end face 2", provided with the concentric orifices or ports 2 2 the outer of which is of the greater pitch. The sides or body of the cylinder also contain successive annular ports or discharge-orifices 3 3 3, the two first of which are also of relatively varying pitch, while the orifice 3 extends in a reverse direction to afford a back-spray protection for the user. The ports or orifices maybe as numerous as may be found desirable.

It will be comprehended that in this last arrangement the sleeve may be adjusted to direct the combined discharge of the several orifices in an almost longitudinal direction or recede to admit of a comparatively wide dispersion of the same. This latter effect may be increased with reference to either of the side parts by bringing an internally-beveled face of the sleeve opposite to receive the im pingement of the water and exert a widelyscattering effect thereon. Further, the angle of the cylindrical head and that of the sleeve are relatively such that both will contact with the ground, and thus constitute a protectingguard for the perforated head.

I claim 1. In a spray-nozzle for fire-hose, the combination of an externally-screw-threaded eylindrical body, a head provided with a series of jet-orifices arranged at different angles to the axis of the nozzle, a sleeve engaging with a screw-thread on the cylindrical body, so that itmay be moved forward, for the purpose of deflecting the jets of water passing through the orifices, and a flange with which the sleeve comes in contact when moved forward to its greatest limit, substantially as and for the purpose above described.

2. In a spray-nozzle for fire-hose, the combination of an externally-screw-threaded cylindrical body, a head provided with a series of jet-orifices, arranged at different angles to the axis of the nozzle, a sleeve engaging with the screw-thread on the cylindrical body, so that it may be moved forward, for the purpose of deflecting the jets of water passing through the orifices, a flange with which the sleeve comes in contact when moved forward to its greatest limit, and a gasket seated against the flange, substantially as, and for the purpose, above described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 15th day of August, 1895.

MILTON II. HART.

W'itnesses:

J. F. BITTER, WILLIAM PAXTON. 

